UPD17062 datasheet(56/298 Pages) RENESAS

номер детали	UPD17062

подробное описание детали	MOS INTEGRATED CIRCUIT

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µPD17062

8. SYSTEM REGISTER (SYSREG)

“System register” is the generic name for those registers directly related to CPU control. System registers

are allocated at addresses 74H-7FH in data memory and can be referenced regardless of the bank specification.

The system register types are as follows:

Address register

Window register

Bank register

Memory pointer enable flag

Index register

Data memory row address pointer

General-purpose register pointer

Program status word

Fig. 8-1

Configuration of System Register

b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0

AR3

AR2

AR1

AR0

BANK

IXH

IXM

MPH

MPL

IXL

RPH

RPL

PSW

74H

75H

76H

77H

78H

79H

7AH

7BH

7CH

7DH

7EH

7FH

0 0 00 0 0 00

P 0 0 0 0

0 0 0 0

(IX)

Address

Symbol

Bit

Data

Address register

(AR)

System register

Window

(WR)

Bank

(BANK)

Index register

(IX)

Data memory

row address

pointer

(MP)

General-

purpose

pointer

(RP)

Program

status

word

(PSWORD)

(MP)

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